Preparation and properties of optimized waterborne epoxy resin mixed with SBR modified emulsified asphalt

被引：0
作者：
Zhao, Lihua [1 ]
Zhu, Ruitong [1 ]
Li, Wenhe [1 ]
Yang, Lijuan [1 ]
Zhao, Shijia [2 ]
机构：
[1] Dalian Jiaotong Univ, Sch Transportat Engn, Dalian 116028, Peoples R China
[2] Liaoning Prov Transportat Construct Management Co, Shenyang 110000, Peoples R China
来源：
MATERIA-RIO DE JANEIRO | 2025年 / 30卷
基金：
中国国家自然科学基金;
关键词：
Micro-surfacingbinder; Composite-modified emulsified asphalt; Performance evaluation; Microcosmic mechanism; Modifier dosage; PERFORMANCE;
D O I：
10.1590/1517-7076-RMAT-2024-0734
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study recommended a micro-surfacing cold-mix binder with good water stability, high- and lowtemperature property and fast curing rate. Additionally, a dynamic water disturbance experiment method to evaluate the adhesion of composite modified emulsified asphalt was developed. Initially, the optimal SBR content is determined through performance tests, followed by selected a suitable WER system via film-forming experiments. Various WER-SBR composite-modified emulsified asphalt formulations are prepared by adjusting WER concentrations. The properties of WER-SBR modified emulsified asphalt were comprehensively evaluated using methods including penetration, softening point, ductility, Brookfield electron microscopy, and fluorescence microscopy, and the appropriate range of WER content was discussed. The results of the study showed that when the SBR content was 3%, the comprehensive performance of the modified emulsified asphalt was optimal. The addition of WER could improved the high-temperature performance and adhesion of SBR modified emulsified asphalt, but it gradually weakened the low-temperature performance and storage stability. Based on the comprehensive evaluation of the experiments, if the modified emulsified asphalt is for immediate use, the recommended WER content is 6%-9%. If the modified emulsified asphalt needs to be stored for one day, the recommended WER content is below 4%.
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页数：19
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